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Estimates of the magnetic field of neutron stars in X-ray pulsars are obtained using the hypothesis of the equilibrium period for disk and wind accretion and also from the BATSE data on timing of X-ray pulsars using the observed maximum…

Astrophysics · Physics 2016-08-30 S. B. Popov , V. M. Lipunov

Recent high resolution observations by the {\it Chandra} X-ray satellite revealed various substructures in hot X-ray emitting plasmas in cluster of galaxies. For example, {\it Chandra} revealed the existence of sharp discontinuities in the…

Astrophysics · Physics 2009-11-11 Naoki Asai , Naoya Fukuda , Ryoji Matsumoto

We use the Boltzmann transport theory in the relaxation time approximation to describe the thermal transport of spin waves in a ferromagnet. By treating spin waves as magnon excitations we are able to compute analytically and numerically…

Materials Science · Physics 2018-09-05 Vittorio Basso , Elena Ferraro , Marco Piazzi

(Abridged) This is the second in a series of papers in which we derive simultaneous constraints on cosmology and X-ray scaling relations using observations of massive, X-ray flux-selected galaxy clusters. The data set consists of 238…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Adam Mantz , Steven W. Allen , Harald Ebeling , David Rapetti , Alex Drlica-Wagner

In wind-powered X-ray binaries, the radiatively driven stellar wind from the primary may be inhibited by the X-ray irradiation. This creates the feedback that limits the X-ray luminosity of the compact secondary. Wind inhibition might be…

Solar and Stellar Astrophysics · Physics 2018-12-12 Jiri Krticka , Jiri Kubat , Iva Krtickova

In order to find the conditions which determine whether X-Ray hot gas in galaxy groups (intragroup gas; IGG) is heated externally or internally, we investigate the evolution of blast waves in galaxy groups growing on a hierarchical…

Astrophysics · Physics 2009-11-06 Yutaka Fujita

Oscillating behaviour of the susceptibility and heat capacity is considered for normal and superconducting mesoscopic systems (nanoclusters and quantum dots). It is proved that at low temperature an increasing magnetic field applied to a…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 N. K. Kuzmenko , V. M. Mikhajlov

Compton scattering within the accretion column of magnetic cataclysmic variables (mCVs) can induce a net polarization in the X-ray emission. We investigate this process using Monte Carlo simulations and find that significant polarization…

Astrophysics · Physics 2009-11-13 Aimee McNamara , Zdenka Kuncic , Kinwah Wu

Recent X-ray observations have revealed a universal temperature profile of the intracluster gas of non-cooling flow clusters which is flat for r \le 0.2 r_{180}. Numerical simulations, however, obtain a steeper temperature profile in the…

Astrophysics · Physics 2009-11-07 Biman B. Nath

Understanding and predicting the heat released by magnetic nanoparticles is central to magnetic hyperthermia treatment planning. These nanoparticles tend to form aggregates when injected in living tissues, which alters their response to the…

Mesoscale and Nanoscale Physics · Physics 2025-07-08 Javier Ortega Julia , Daniel Ortega , Jonathan Leliaert

A minimal model for multipole orders in CeB$_6$ shows that degeneracy of the quadrupole order parameters and strong spin-orbit coupling lead to peculiar temperature and magnetic-field dependences of the X-ray reflection intensity at…

Strongly Correlated Electrons · Physics 2016-08-31 Hiroshi N. Kono , Katsunori Kubo , Yoshio Kuramoto

We examine the effect of thermal conduction on the observational properties of a super critical hot magnetized flow. We obtained self-similar solution of a magnetized disc when the thermal conduction plays an important role. Follow of our…

High Energy Astrophysical Phenomena · Physics 2015-06-15 M. Ghasemnezhad , M. Khajavi , S. Abbassi

We present a temperature and magnetic field dependence study of spin transport and magnetothermal corrections to the thermal conductivity in the spin S = 1/2 integrable easy-plane regime Heisenberg chain, extending an earlier analysis based…

Strongly Correlated Electrons · Physics 2017-08-10 C. Psaroudaki , X. Zotos

We perform a suite of simulations of cooling cores in clusters of galaxies in order to investigate the effect of the recently discovered heat flux buoyancy instability (HBI) on the evolution of cores. Our models follow the 3-dimensional…

Cosmology and Nongalactic Astrophysics · Physics 2009-09-24 Tamara Bogdanovic , Christopher S. Reynolds , Steven A. Balbus , Ian J. Parrish

The solar chromosphere is heated to temperatures higher than predicted by radiative equilibrium. This excess heating is greater in active regions where the magnetic field is stronger. We aim to investigate the magnetic topology associated…

Solar and Stellar Astrophysics · Physics 2022-05-04 J. M. da Silva Santos , S. Danilovic , J. Leenaarts , J. de la Cruz Rodríguez , X. Zhu , S. M. White , G. J. M. Vissers , M. Rempel

Theoretical studies of the physical processes guiding the formation and evolution of galaxies and galaxy clusters in the X-ray are mainly based on the results of numerical hydrodynamical N-body simulations, which in turn are often directly…

Astrophysics · Physics 2015-06-24 P. Mazzotta , E. Rasia , L. Moscardini , G. Tormen

The absence of thermal instability in the high/soft state of black hole X-ray binaries, in disagreement with the standard thin disk theory, is a long-standing riddle for theoretical astronomers. We have tried to resolve this question by…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Shuang-Liang Li , Mitchell C. Begelman

Properties of high redshift clusters are a fundamental source of information for cosmology. It has been shown by Oukbir and Blanchard (1997) that the combined knowledge of the redshift distribution of X-ray clusters of galaxies and the…

Astrophysics · Physics 2011-05-23 R. Sadat , A. Blanchard , J. Oukbir

Results are presented of a new VLA-ROSAT study that probes the magnetic field strength and distribution over a sample of 16 ``normal'' low redshift (z < 0.1) galaxy clusters. The clusters span two orders of magnitude in X-ray luminosity,…

Astrophysics · Physics 2009-10-31 T. E. Clarke , P. P. Kronberg , H. Boehringer

The non-spherically symmetric transport equations and exact thermal evolution model are used to calculate the transient thermal response to pulsars. The three possible ways of energy release originated from glitches, namely the `shell',…

Astrophysics · Physics 2009-10-31 Anisia P. S. Tang , K. S. Cheng